💰 Finance Calculators
Plan loans, mortgages and savings with accurate, easy-to-use calculators.
Loan / EMI Calculator
Work out your monthly loan payment, total interest and payoff schedule.
Mortgage Calculator
Estimate your monthly mortgage payment with taxes, insurance, PMI and HOA.
Compound Interest Calculator
See how your savings and investments grow over time with compounding.
Salary Calculator
Estimate your take-home pay from your annual salary or hourly wage.
Percentage Calculator
Find percentages, percentage change and percent of any number instantly.
Refinance Calculator
Find your break-even point and see if refinancing your loan saves money.
Auto Loan Calculator
Calculate your monthly car payment, total interest and total cost.
Personal Loan Calculator
Plan a personal loan and see how extra payments cut your payoff time.
Car Insurance Estimator
Estimate your car insurance premium range by state, car and coverage.
✎️ Text Tools
Quick utilities for writers, students and developers.
📅 Everyday Calculators
Simple answers for everyday numbers — dates, ages, units and health.
Age Calculator
Find your exact age in years, months and days, plus days until your birthday.
Date Calculator
Count days between two dates, or add and subtract days from any date.
Unit Converter
Convert length, weight, temperature and volume between common units.
BMI Calculator
Check your body mass index and healthy weight range in seconds.
✨ Generators
Create QR codes, color palettes and usernames in one click.
Why SumKit?
Every tool on this site is free, works on any device, and runs entirely in your browser — nothing you enter is uploaded or stored on a server. Our calculators use the same standard formulas lenders and professionals use, and every tool page explains how it works so you can trust the result. Learn more about us.