Practical tools for real-world problems
Calculate, check, compare and understand what to do next.
Browse by category
Build
Material, measurement and project tools for construction and DIY.
- Block quantity calculator
- Brick quantity calculator
- Concrete bag calculator
Cook
Cooking and baking conversion tools.
- Cake tin & baking pan size converter
- Cups to grams (and grams to cups) by ingredient
- ml to cups converter
Dev
Developer checks for dates, YAML, URLs, regular expressions and configuration portability.
- Date String Portability Checker
- Differential Privacy Epsilon Budget Calculator
- .env Portability Preflight
Drive
Vehicle costs, EV charging, fuel and journey tools.
- Annual mileage cost
- Battery energy to range reverse estimator
- Diesel journey cost
Energy
Energy and appliance running-cost tools.
- Air-conditioner cost calculator
- Appliance running-cost calculator
- Battery runtime calculator
Events
Event and party planning tools.
- Cake servings calculator
- Catering portions estimator
- Chair quantity calculator
Files
Browser-side checks for email, Markdown and text-file portability.
- EML/MIME Import Doctor
- Markdown Portability Preflight
- MIME Attachment Filename Doctor
Garden
Garden and landscaping material tools.
- Compost calculator
- Decking calculator
- Fence panel calculator
Home
Property and home-project budgeting tools.
- Extension rough-cost estimator
- Flooring budget estimator
- Home maintenance budget planner
Image, printing and dimension tools.
- Aspect-ratio calculator
- DPI calculator
- Image-resize dimensions
Tech
Data, internet and technology tools.
- Audio file-size estimator
- Bitrate calculator
- Data-usage calculator
Time
Time and scheduling tools.
- Add/subtract days
- Break-time calculator
- Business days between dates
Featured tools
Brick quantity calculator
How many bricks you need for a wall, with a reverse mode for a fixed brick count.
Cups to grams (and grams to cups) by ingredient
Convert US cups to grams, or grams to cups, for flour, sugar, butter, rice and honey.
YAML Semantic Difference Checker
Shows how the same YAML means something different under YAML 1.1 vs YAML 1.2 rules.
EV charging cost calculator
What an EV charge will cost, from battery size, charge range and electricity price.
Appliance running-cost calculator
How much it costs to run any electrical appliance from its power rating and usage.
Food portions estimator
Works out roughly how much food to prepare or order for an event.
How PracticalBench tools work
Runs in your browser. Every calculator on this site computes locally — nothing you enter is uploaded, see our methodology.
Assumptions shown, not hidden. Every tool states what it assumes and what it doesn't cover.
Free, no account. No sign-up, no paywall to use a tool.