Everyday Calculators
Age Calculator
APR Calculator
ARR Calculator
Barcode Generator
BMI Calculator
Burn Rate Calculator
CAC Calculator
Capacitor Calculator
Churn Rate Calculator
Coin Flip
Commission Calculator
Compound Interest Calculator
Credit Card Payoff Calculator
Credit Score Simulator
Date Calculator
Debt Payoff Calculator
Debt to Income Ratio Calculator
Dice Roller
Discount Calculator
Final Grade Calculator
GPA Calculator
Grade Calculator
Hourly to Salary Calculator
Hours Calculator
House Affordability Calculator
Inflation Calculator
Investment Return Calculator
Life Insurance Calculator
Loan Payment Calculator
LTV Calculator
Miles to KM Converter
Mortgage Calculator
MRR Calculator
Net Worth Calculator
NPV Calculator
Ohms Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law with unit conversion.
Password Generator
Power Factor Calculator
Calculate power factor, phase angle, and capacitor correction from real, apparent, and reactive power.
Payback Period Calculator
Percent Difference Calculator
Percentage Decrease Calculator
Percentage Increase Calculator
Personal Loan Calculator
Pomodoro Timer
Property Tax Estimator
QR Code Generator
Random Number Generator
Refinance Calculator
Retirement Calculator
Plan your retirement savings. See projected savings, monthly income, and whether you are on track.
Rent Increase Calculator
Rental Yield Calculator
ROAS Calculator
ROI Calculator
Runway Calculator
Sales Tax Calculator
Savings Goal Calculator
Solar Panel Calculator
Stamp Duty Estimator
Tax Residency Day Counter
Time Calculator
Tip Calculator
Travel Cost Calculator
Visa Stay Counter
Bonus Tax Estimator
Corporation Tax Planner
Gross-Up Calculator
Invoice Generator
Payroll Tax Calculator
Pregnancy Due Date Calculator
Rent vs Buy Calculator
SaaS Valuation Calculator
Scientific Calculator
Self-Employment Tax Estimator
Inflation Calculator
Debt to Income Ratio Calculator
Net Worth Calculator
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Includes formulas, reference table, and quick conversion links.
Inches to CM Converter
Convert inches to centimeters and cm to inches. Reference table, live conversion, common measurements.
KG to LBS Converter
Convert kilograms to pounds and lbs to kg instantly. Reference table with common weights.
Miles to KM Converter
Convert miles to kilometers and km to miles. Quick presets for common distances.
Cups to ML Converter
Convert cups, tablespoons, teaspoons, fluid ounces, and liters. Perfect for cooking recipes.
Business Days Calculator
Calculate business days between dates or add working days to a date. Excludes weekends automatically.
Personal Loan Calculator
Calculate monthly EMI, total interest, and amortization schedule for any personal loan amount and term.
Income Tax Calculator
Estimate federal income tax with bracket breakdown, effective rate, and take-home pay. 2026 brackets.
Savings Calculator
Project savings growth with compound interest. See year-by-year breakdown of contributions vs interest earned.
Home Loan Calculator
Calculate monthly mortgage payment, total interest, and full amortization schedule. Compare 15 vs 30 year terms.
Solar Panel Calculator
Estimate solar panel system size, cost, savings, and payback period based on your electricity bill.
Home Insurance Calculator
Estimate annual home insurance premium based on home value, construction type, and coverage amount.
Relationship Anniversary Calculator
How long have you been together? See years, months, days, hours, heartbeats, and upcoming milestones.
Resistor Color Code Calculator
Decode resistor color bands to resistance value or find colors from a value. 4-band and 5-band support.
LED Resistor Calculator
Calculate the correct resistor for any LED circuit. Single and series modes, E24 values, power dissipation.
Voltage Divider Calculator
Calculate output voltage, current, and power dissipation for resistive voltage dividers. Reverse mode finds R1/R2 ratio.
Wire Gauge Calculator (AWG)
Calculate recommended AWG wire gauge, ampacity, voltage drop, resistance, and wire diameter for any circuit.
Three Phase Calculator
Calculate three-phase power, voltage, and current for Star (Y) and Delta configurations with power factor.
Transformer Calculator
Calculate transformer turns ratio, voltage, current, and VA/kVA rating. Find missing values from Vp/Vs = Np/Ns.
Frequency Calculator
Convert between frequency and period. Calculate angular frequency and EM wavelength.
Wavelength Calculator
Calculate wavelength from frequency, EM spectrum position, and antenna lengths.
Logic Gate Simulator
Simulate AND, OR, NOT, NAND, NOR, XOR, XNOR gates with truth tables, gate chaining, and boolean expressions.
Decibel Calculator
Calculate power dB, voltage dB, SPL, dB-to-ratio conversion, and dBm-to-watts. Reference table included.
Battery Life Calculator
Calculate battery life from capacity and current draw. Reverse-calculate required capacity. Common battery reference.
PCB Trace Width Calculator
Calculate minimum PCB trace width per IPC-2221. Voltage drop, resistance, internal vs external layers.
Electricity Cost Calculator
Calculate electricity cost for any device. Daily, monthly, yearly costs. Multiple devices. LED vs CFL comparison.