Goofer GamesFind a tool
Menu

Real-Life Math

Math for real life.

From supermarket discounts to home projects.
Simple tools for everyday decisions.

23 tools for everyday life

Money & Shopping

Prices, discounts and everyday money decisions.

6 calculators
€80−25%€60
Save €20

Money & Shopping

Discount Calculator

What will I actually pay?

Open calculator
80+25%100
A 25% increase

Money & Shopping

Percentage Change Calculator

How much did the value change?

Open calculator
€100+21% VAT€121
€21 added

Money & Shopping

VAT Calculator

Add or remove VAT from a price.

Open calculator
€4.80÷ 6 items€0.80
per item

Money & Shopping

Unit Price & Package Comparison

Which package gives better value?

Open calculator
€1,0004% / year · 3 years€1,120
€120 simple interest

Money & Shopping

Simple Interest Calculator

How much interest will I earn?

Open calculator
€1,0005% / year · 10 years€1,628.89
Annual compounding · rounded

Money & Shopping

Compound Growth Calculator

See how repeated growth adds up.

Open calculator

Cooking

Recipes and quantities, in the right proportions.

2 calculators
300 g4 → 7 servings525 g
Every ingredient × 1.75

Cooking

Recipe Scaling Calculator

Cooking for more people?

Open calculator
250 ggrams → ounces≈ 8.82 oz
Weight, not volume

Cooking

Cooking Unit Converter

Convert cooking weights and volumes.

Open calculator

Travel

Distance, time and the cost of getting there.

3 calculators
240 km÷ 3 hours80 km/h
Average speed

Travel

Speed, Distance & Time Calculator

How fast was the journey?

Open calculator
14:35+ 2 h 35 min17:10
Same time zone

Travel

Arrival Time Calculator

What time will I arrive?

Open calculator
450 km6.5 L/100 km · €1.75/L€51.19
29.25 litres · cost rounded

Travel

Fuel Needed & Cost Calculator

What will this journey cost?

Open calculator

Home & DIY

Measure your space. Plan what you need.

4 calculators
11 m²2 coats · 10 m²/L2.2 L
Net paintable area

Home & DIY

Paint Needed Calculator

How much paint do I need?

Open calculator
5 × 4 m20 m² + 10% extra22 m²
Including the extra allowance

Home & DIY

Flooring Needed Calculator

How much flooring should I buy?

Open calculator
12 m²60 × 30 cm · 10% extra74 tiles
Rounded up to whole tiles

Home & DIY

Tile Quantity Calculator

How many tiles will cover it?

Open calculator
12 × 8 m40 m − 1.2 m gate38.8 m
Perimeter minus the gate

Home & DIY

Fencing & Perimeter Calculator

How much fencing do I need?

Open calculator

Work & Everyday

Make sense of rates and everyday quantities.

1 calculator
€180÷ 6 hours€30/h
Amount divided by time

Work & Everyday

Hourly Rate Calculator

What is the amount per hour?

Open calculator

Sports

Turn time and distance into a useful pace.

1 calculator
10 kmin 52 minutes5:12
minutes per kilometre

Sports

Running Pace Calculator

Find your pace per kilometre.

Open calculator

Geometry

Measurements and scale for the world around you.

2 calculators
r = 5 mArea = π × r²78.54 m²
Area rounded to 2 decimals

Geometry

Circle Area & Circumference Calculator

Find area and circumference.

Open calculator
4.5 cmScale 1:50,0002.25 km
Map → real distance

Geometry

Map Scale Calculator

How far is that in real life?

Open calculator

Data

Weights, averages and the chances of an outcome.

2 calculators
80 & 9230% and 70% weights88.4
80 × 0.3 + 92 × 0.7

Data

Weighted Average Calculator

Combine values with different weights.

Open calculator
3 of 83 ÷ 8 × 10037.5%
8 equally likely outcomes

Data

Simple Probability Calculator

What is the chance of that outcome?

Open calculator

Fractions & Ratios

Share, combine and compare with confidence.

2 calculators
⅔ + ¾8/12 + 9/1217/12
= 1 5/12

Fractions & Ratios

Fraction Operations Workspace

Add, subtract, multiply or divide.

Open calculator
€420Ratio 2 : 5€120 + €300
Two shares that add to €420

Fractions & Ratios

Ratio Splitter

Split a total into proportional shares.

Open calculator

✦Don't just get the answer

Calculate → Understand → Practise → Master

01

Calculate

Solve the real problem.

02

Understand

See how the answer was calculated.

03

Practise

Try the underlying maths skill.

04

Master

Continue through the Goofer Math journey.

Continue learning maths →

Ready to go deeper?

Follow 155 connected skills from first numbers to advanced problem solving.

Open the full Math journey →Get the iPhone app ↗