Free online utilities

Other Tools

Discover practical calculators, everyday helpers, security utilities, learning tools, and focused generators from across Utilnivo.

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139

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135 local

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Other tools

139 results

Invoice Generator

Create professional invoices with live preview, local drafts, and PDF download — no login.

On your device
No signup

Tip Calculator

Calculate tip, total, and per-person amounts for a bill.

On your device
No signup

QR Code Generator

Create QR codes from text or URLs.

On your device
No signup

Unit Converter

Convert between common units of length, weight, volume, and temperature.

On your device
No signup

Percentage Calculator

Calculate percentages, increases, decreases, and ratios.

On your device
No signup

Algebra Calculator

Equations, matrices, and complex numbers together — exact when verified, approximate when not.

On your device
No signup

Random Challenge

Get a quick challenge with steps and a time estimate.

On your device
No signup

Random Password

Generate a random password with quick presets.

On your device
No signup

Random Emoji

Pick a random emoji with a friendly name and tags.

On your device
No signup

Random Color

Generate a random color in HEX, RGB, HSL, and HSV.

On your device
No signup

Random Animal

Pick a random animal with a habitat and fun fact.

On your device
No signup

Random Word

Generate a random English word by topic.

On your device
No signup

Random Movie

Pick a random movie with synopsis and rating.

On your device
No signup

Random Quote

Generate a random inspirational quote to share.

On your device
No signup

Random Book

Get a random book suggestion with author and year.

On your device
No signup

Random Country

Pick a random country with capital and region.

On your device
No signup

Excuse Generator

Generate a clean, harmless excuse by category.

On your device
No signup

Dad Joke Generator

Get a random family-friendly dad joke.

On your device
No signup

Coin Flip

Flip a virtual coin for heads or tails.

On your device
No signup

Compliment Generator

Generate a positive compliment to share.

On your device
No signup

Love Calculator

Get a fun love compatibility score from two names.

On your device
No signup

Dice Roller

Roll d4, d6, d8, d10, d12, or d20 dice online.

On your device
No signup

Friendship Calculator

Get a fun friendship compatibility score from two names.

On your device
No signup

Random Picker

Pick one or more random options from a list.

On your device
No signup

Random Meal Picker

Pick a random meal for breakfast, lunch, dinner, or snack.

On your device
No signup

Yes or No Decision Maker

Get a quick yes, no, or maybe answer online.

On your device
No signup

Nickname Generator

Generate fun nicknames from a name.

On your device
No signup

Team Generator

Split names into random balanced teams.

On your device
No signup

Random Name Picker

Pick a random name or winner from a list.

On your device
No signup

Username Generator

Generate fun username ideas by style.

On your device
No signup

Secret Santa Generator

Randomly assign Secret Santa gift pairs.

On your device
No signup

Spin the Wheel

Create a custom wheel and spin to pick a random winner.

On your device
No signup

Typing Speed Test

Test typing speed with 30- or 60-second modes.

On your device
No signup

Reaction Time Test

Measure how fast you can click when the screen turns green.

On your device
No signup

Click Speed Test

Measure how many clicks you can make per second.

On your device
No signup

Spacebar Counter

Count spacebar presses in a timed session.

On your device
No signup

Advanced Spin Wheel

Create premium spin wheels with weights, elimination, teams, saves, sharing, classroom mode, and OBS presentation.

On your device
No signup

AC Energy Cost Calculator

Estimate AC running cost by tonnage, SEER, and electricity rate.

On your device
No signup

Age Calculator

Calculate exact age in years, months, and days from a date of birth.

On your device
No signup

Alarm Clock

Set a browser alarm for a specific time.

On your device
No signup

Allowance Calculator

Estimate allowance from base pay, chores, bonuses, and savings.

On your device
No signup

Assignment Grade Calculator

Calculate weighted course grades from assignments and exam scores.

On your device
No signup

Attendance Calculator

Calculate attendance percentage from classes attended.

On your device
No signup

Baby Name Generator

Explore baby name ideas by style and starting letter.

On your device
No signup

Barcode Generator

Generate barcodes for products and labels.

On your device
No signup

Barcode Scanner

Scan barcodes with your device camera.

On your device
No signup

Basic Grammar Checker

Offline grammar and clarity suggestions (not a full AI writing assistant).

On your device
No signup

Blog Outline Generator

Generate structured outlines for blog posts and articles.

On your device
No signup

BMI Calculator

Calculate body mass index using metric or US units with a general classification.

On your device
No signup

Business Days Calculator

Count weekdays between two dates, excluding holidays.

On your device
No signup

Calculus Calculator

Numerical derivatives, definite integrals, and limit estimates — not symbolic CAS claims.

On your device
No signup

Calendar Generator

Generate printable monthly calendars.

On your device
No signup

Calorie Calculator

Estimate daily calorie needs from basic inputs.

On your device
No signup

CGPA Calculator

Calculate CGPA on a 10-point scale from course grades and credits.

On your device
No signup

Child Height and Weight Tracker

Approximate educational growth bands (not WHO/CDC charts).

On your device
No signup

Childcare Cost Calculator

Convert monthly daycare tuition into annual and hourly cost.

On your device
No signup

Complex Number Calculator

Work with rectangular, polar, and exponential complex forms locally.

On your device
No signup

Concrete Calculator

Estimate cubic yards and bag counts for a concrete slab.

On your device
No signup

Countdown Calculator

Count time remaining until a date or event.

On your device
No signup

Cover Letter Draft Generator

Build cover letter drafts from templates (not AI).

On your device
No signup

Currency Converter with Custom Exchange Rate

Convert amounts using an exchange rate you enter (not live market rates).

On your device
No signup

Date Difference Calculator

Count days, weeks, and months between two dates.

On your device
No signup

Electricity Bill Estimator

Estimate monthly electricity bill from kWh, rate, and fees.

On your device
No signup

Electricity Cost Calculator

Estimate how much an appliance costs to run.

On your device
No signup

Email Draft Generator

Draft emails from purpose, tone, and topic templates (not AI).

On your device
No signup

Equation Solver

Solve equations numerically, check quadratics, and handle small linear systems.

On your device
No signup

Essay Word Limit Checker

Check essay word count against a limit with remaining words and percent used.

On your device
No signup

EV Charging Cost Calculator

Estimate electric vehicle charging costs.

On your device
No signup

Final Grade Calculator

Find what score you need on your final exam.

On your device
No signup

Flooring Calculator

Estimate flooring square footage, waste, and boxes to order.

On your device
No signup

Fraction Practice Generator

Create simple fraction addition practice problems.

On your device
No signup

Free Online Graphing Calculator

Plot and analyze functions with zoom, trace, tables, and numerical analysis tools.

On your device
No signup

Fuel Cost Calculator

Estimate trip fuel costs from distance and price.

On your device
No signup

GPA Calculator

Calculate weighted GPA from course credits and letter grades or grade points.

On your device
No signup

Grade Curve Calculator

Apply a curve to a set of scores to hit a target mean or boost.

On your device
No signup

Grade-Level Vocabulary Generator

Generate vocabulary words by elementary or middle grade level.

On your device
No signup

Grocery Unit Price Comparator

Compare two grocery items by price per ounce, liter, or each.

On your device
No signup

GST Calculator

Calculate GST for exclusive or inclusive amounts.

On your device
No signup

Hashtag Generator

Generate hashtag ideas for social posts—template-based, not AI.

On your device
No signup

Homework Planner

Break homework time into simple assignment blocks.

On your device
No signup

Instagram Caption Generator

Draft Instagram captions and hashtags—template-based, not generative AI.

On your device
No signup

Invoice Number Generator

Generate formatted invoice numbers with prefix and date.

On your device
No signup

IP Address Lookup

Look up location and network details for an IP address.

Online lookup
No signup

Job Description Generator

Draft job descriptions from role details—template-based, not AI.

On your device
No signup

Kids Chore Chart Generator

Create a printable weekly chore rotation for kids.

On your device
No signup

LinkedIn Headline Generator

Create LinkedIn headline options from templates.

On your device
No signup

Margin vs Markup Calculator

Find selling price from cost using margin or markup.

On your device
No signup

Matrix Calculator

Edit matrices, run linear algebra operations, and solve systems on your device.

On your device
No signup

Meeting Cost Calculator

Estimate the payroll cost of a meeting by headcount and duration.

On your device
No signup

Mileage Calculator

Calculate fuel efficiency and mileage.

On your device
No signup

Moving Cost Calculator

Estimate DIY move cost from truck, fuel, labor, and supplies.

On your device
No signup

Multiplication Practice Generator

Generate printable multiplication fact practice with answers.

On your device
No signup

Online Scientific Calculator

Scientific calculations with trig, logs, powers, memory, and history — private on your device.

On your device
No signup

Paint Calculator

Estimate gallons of paint for walls and optional ceiling.

On your device
No signup

Percentage Grade Calculator

Convert points earned into a percentage and letter grade.

On your device
No signup

Pomodoro Timer

Run focus sessions with short and long breaks using the Pomodoro method.

On your device
No signup

Pregnancy Due Date Calculator

Estimate a due date from the start of the last period.

On your device
No signup

Printable Worksheet Generator

Create a printable worksheet from custom questions.

On your device
No signup

Product Description Generator

Draft product descriptions for ecommerce—template-based, not AI.

On your device
No signup

Profit Calculator

Calculate profit, margin, and markup from cost and revenue.

On your device
No signup

Profit Margin Calculator

Calculate profit, margin percent, and markup percent.

On your device
No signup

Prompt Generator

Build clearer prompts for AI tools and assistants.

On your device
No signup

PTO Calculator

Check PTO balance after a time-off request and annual accrual.

On your device
No signup

QR Scanner

Scan QR codes with your device camera.

On your device
No signup

Reading Level Calculator

Estimate reading level with Flesch Reading Ease.

On your device
No signup

Receipt Generator

Create plain-text receipts from line items.

On your device
No signup

Recipe Converter

Scale recipe ingredients up or down by servings.

On your device
No signup

Resume Profile Consistency Checker

Compare resume, LinkedIn, and GitHub for conflicts before you apply.

Online lookup
No signup

Resume Wording Optimizer

Get resume wording tips from rule-based templates (not AI).

On your device
No signup

Road Trip Cost Calculator

Plan total road trip costs including fuel and extras.

On your device
No signup

Sales Commission Calculator

Calculate commission and total earnings from sales.

On your device
No signup

School Lunch Planner

Plan a week of school lunches from mains, sides, and fruits.

On your device
No signup

School Supply Checklist

Generate a back-to-school supply checklist by grade band.

On your device
No signup

Screen-Time Planner

Draft weekday and weekend screen-time rules for kids.

On your device
No signup

Spelling Test Generator

Turn spelling words into a simple printable test.

On your device
No signup

Split Bill Calculator

Split a restaurant bill evenly with tip and tax.

On your device
No signup

STAAR Score Calculator

Estimate your STAAR scale score, understand your performance level, and see what you may need to reach the next level.

On your device
No signup

Statistics Calculator

Summarize data lists, run regressions, and explore probability tools privately.

On your device
No signup

Stopwatch

Time events with lap splits and centisecond precision.

On your device
No signup

Study Schedule Generator

Build a weekly study schedule by subject and day.

On your device
No signup

Study Timer

Focus timer with study and break intervals.

On your device
No signup

Test Score Calculator

Convert correct and incorrect answers into a percentage and letter grade.

On your device
No signup

Time Card Calculator

Total work hours from clock-in, clock-out, and break times.

On your device
No signup

Time Duration Calculator

Find the difference between two clock times.

On your device
No signup

Time Zone Converter

Compare times across world time zones.

On your device
No signup

Timer

Set a countdown timer with optional notifications.

On your device
No signup

UUID Lookup

Service UUID lookup: inspect version, variant, and embedded timestamps.

On your device
No signup

VAT Calculator

Calculate VAT for exclusive or inclusive amounts.

On your device
No signup

Water Intake Calculator

Estimate daily water intake recommendations.

On your device
No signup

Weighted Grade Calculator

Calculate weighted grades and final scores.

On your device
No signup

YouTube Title Generator

Generate YouTube title ideas from templates.

On your device
No signup

ZIP Code Distance Calculator

Calculate straight-line distance between two US ZIP codes.

Online lookup
No signup

ZIP Code Lookup

Find city, state, and coordinates for a US ZIP code.

Online lookup
No signup

AI CSV Column Matcher

Map columns between CSV schemas with explainable, privacy-first suggestions.

AI-powered
On your device
Stays on your device
No signup
Beta

Auto Loan Payoff Calculator

See how long it takes to pay off a car loan with your payment or target months.

On your device
No signup

Contractor Rate Calculator

Find the hourly contract rate needed to match a W-2 salary after taxes and expenses.

On your device
No signup

Debt Payoff Calculator

Compare debt snowball vs avalanche payoff strategies with one extra payment.

On your device
No signup

Mortgage Payoff Calculator

Estimate months to pay off a mortgage with extra payments or a target payoff date.

On your device
No signup

Salary to Hourly Calculator

Convert annual salary to an hourly rate using standard or custom hours per year.

On your device
No signup

One useful collection

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Published tools beyond the main categories

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