Useful calculators.
Simple tools. Fast answers.
Free browser-based tools for everyday money math, home projects, travel, time, writing, images, and video workflows. No sign-up required.
Money calculators
Useful calculators for shopping, pay, loans, savings, and common money math.
Tip Calculator
Calculate a tip, total bill, and per-person amount for restaurants, delivery, salons, and other services.
Discount Calculator
Find sale price, dollars saved, and final cost after a percentage discount.
Sales Tax Calculator
Calculate sales tax and total purchase price using any state or local tax rate.
Salary to Hourly Calculator
Convert annual salary to hourly, weekly, biweekly, and monthly gross pay.
Overtime Pay Calculator
Estimate regular pay, overtime pay, and weekly gross earnings using a custom overtime multiplier.
Mortgage Payment Calculator
Estimate monthly principal and interest for a fixed-rate home loan.
Auto Loan Calculator
Estimate a monthly car payment from vehicle loan amount, APR, and term.
Compound Interest Calculator
Project how savings may grow with deposits and compound interest.
Savings Goal Calculator
Estimate the monthly amount needed to reach a savings target by a chosen date.
Home & travel
Simple tools for road trips, rooms, paint, energy, and household planning.
Fuel Cost Calculator
Estimate gasoline cost for a trip using distance, MPG, and gas price.
Paint Calculator
Estimate gallons of wall paint needed from room dimensions and coverage.
Square Footage Calculator
Calculate floor area for rectangular spaces and estimate total square feet across multiple rooms.
Electricity Cost Calculator
Estimate appliance electricity cost from watts, hours of use, and your utility rate.
Everyday calculators
Fast date, time, percentage, age, and conversion utilities.
Percentage Calculator
Calculate percentages, percentage increases, and decreases instantly.
Age Calculator
Calculate age in years, months, and days from a date of birth.
Date Difference Calculator
Find the number of days and weeks between two calendar dates.
Time Duration Calculator
Calculate elapsed hours and minutes between two times, including overnight spans.
Unit Converter
Convert common length, weight, and temperature units.
Creator & work tools
Browser tools for writing, images, video planning, and YouTube workflows.
Word & Character Counter
Count words, characters, sentences, and estimated reading time.
Voiceover Duration Calculator
Estimate narration length from script word count and speaking speed.
Aspect Ratio Calculator
Calculate matching video or image dimensions for 16:9, 9:16, 4:5, 1:1, and more.
Image Compressor
Compress JPEG, PNG, or WebP images locally in your browser and save a smaller WebP copy.
Image Resizer
Resize an image to custom pixel dimensions in your browser.
Image Converter
Convert images to PNG, JPEG, or WebP directly in your browser.
YouTube Thumbnail Viewer
Preview publicly available YouTube thumbnail images from a video URL or video ID.
YouTube Timestamp Generator
Create chapter-style timestamps from a list of section names and durations.
Why ToolNexa exists
Many simple questions should not require an account, an app install, or a page packed with distractions. ToolNexa focuses on quick utilities that solve one clear task at a time. Each tool is paired with an explanation of the formula, assumptions, and common mistakes so the result is easier to understand.
Privacy-first browser tools
Most calculations run entirely in your browser. Image tools also use browser processing in this version, which means your selected image does not need to be uploaded to our server for the core operation.
Built for useful search results
Every page is designed around a real task rather than a collection of empty keyword pages. We add a tool only when it performs a working function and can explain the result clearly.
Helpful guides
Plain-English explanations for popular calculations and creator workflows.
How to Calculate a Tip Quickly
A practical guide to tip percentages, splitting a check, and avoiding mental-math mistakes.
Salary to Hourly Pay: The Simple Formula
Learn how annual salary converts to hourly pay, and why 2,080 hours is commonly used.
What a Mortgage Payment Calculator Actually Shows
Understand principal, interest, loan term, and the housing costs a simple mortgage calculator does not include.
How to Estimate Gas Cost for a Road Trip
Use miles, MPG, and gas price to make a quick fuel budget before a drive.