Spend smarter
Free online calculators
Quick calculators for everyday money decisions, travel planning, shopping, and useful conversions. Each tool is built to give a clear answer without signup or clutter.
Estimate the numbers here, then track the real spending in Spendspace.
Finance
Tip
Use this tip calculator to make quick estimates for tip, check the steps, and plan the next money decision with less friction.
Percentage
Use this percentage calculator to make quick estimates for percentage, check the steps, and plan the next money decision with less friction.
VAT
Use this vat calculator to make quick estimates for vat, check the steps, and plan the next money decision with less friction.
Loan
Use this loan calculator to make quick estimates for loan, check the steps, and plan the next money decision with less friction.
Savings
Use this compound interest calculator to make quick estimates for savings, check the steps, and plan the next money decision with less friction.
Take-home pay
Use this take-home pay calculator to make quick estimates for take-home pay, check the steps, and plan the next money decision with less friction.
Mortgage
Use this mortgage calculator to make quick estimates for mortgage, check the steps, and plan the next money decision with less friction.
Debt payoff
Use this debt payoff calculator to make quick estimates for debt payoff, check the steps, and plan the next money decision with less friction.
Shopping
Discount
Use this discount calculator to make quick estimates for discount, check the steps, and plan the next money decision with less friction.
Price per unit
Use this price per unit calculator to make quick estimates for price per unit, check the steps, and plan the next money decision with less friction.
Conversion
Time
World clock
Use this world clock to make quick estimates for world clock, check the steps, and plan the next money decision with less friction.
Age
Use this age calculator to make quick estimates for age, check the steps, and plan the next money decision with less friction.
Countdown
Use this countdown timer to make quick estimates for countdown, check the steps, and plan the next money decision with less friction.
Automotive
Fuel cost
Use this fuel cost calculator to make quick estimates for fuel cost, check the steps, and plan the next money decision with less friction.
Fuel efficiency
Use this fuel efficiency calculator to make quick estimates for fuel efficiency, check the steps, and plan the next money decision with less friction.
Road trip cost
Use this road trip cost calculator to make quick estimates for road trip cost, check the steps, and plan the next money decision with less friction.
Health
BMI
Use this bmi calculator to make quick estimates for bmi, check the steps, and plan the next money decision with less friction.
Ovulation
Use this ovulation calculator to make quick estimates for ovulation, check the steps, and plan the next money decision with less friction.
Running pace
Use this running pace calculator to make quick estimates for running pace, check the steps, and plan the next money decision with less friction.
Budgeting
Split expenses
Use this split expenses calculator to make quick estimates for split expenses, check the steps, and plan the next money decision with less friction.
Subscriptions
Use this subscription cost calculator to make quick estimates for subscriptions, check the steps, and plan the next money decision with less friction.
Turn quick estimates into clean spending records
Spendspace helps you log purchases, split shared costs, and keep budgets current after the calculator has done the math.
Download on the App Store