Electricity & energy
Appliance Power Consumption Calculator
Estimate appliance energy use and running costs from wattage, usage and your tariff.
- 27 appliance presets
- Daily to yearly cost
Electricity, energy, privacy & AI cost tools
Household electricity calculators come first. Metadata and image-privacy tools form a smaller supporting collection, alongside AI tools that count prompt tokens and estimate API costs.
Electricity & energy (12)
Calculate electricity use, running costs, bills, loads, backup and savings.
Electricity & energy
Home Electricity Usage Calculator
Add multiple appliances to estimate household electricity use, monthly cost, and your biggest energy users.
- Multiple appliance tracking
- Monthly cost & kWh breakdown
Electricity & energy
AC Running Cost Calculator
Estimate air-conditioner running costs from BTU rating, efficiency, usage and electricity rate.
- BTU + EER/SEER inputs
- Hourly to yearly cost
Electricity & energy
Electricity Bill Calculator
Estimate a bill from meter readings or kWh, tariff, fixed charges and tax.
- Meter readings or kWh
- Itemised bill breakdown
Electricity & energy
Electricity Bill Anomaly & Usage Change Checker
Compare two electricity bills to separate usage, billing-period and cost-per-unit changes without assuming a fault.
- Two-bill like-for-like comparison
- Daily usage and average cost per kWh
Electricity & energy
Time-of-Use Electricity Cost & Appliance Scheduler
Map peak and off-peak rates, schedule appliances, and find cheaper hours to use electricity.
- Peak and off-peak rates
- 18 appliance presets
Electricity & energy
Household Electrical Load Compatibility Checker
Total appliance wattage and check amperage, circuit capacity and breaker sizing.
- 120V & 230V systems
- 80% load rule
Electricity & energy
Battery Backup Time & Inverter Size Calculator
Estimate battery runtime or size a battery bank and inverter for household appliances.
- Duty-cycle & surge aware
- LiFePO4, AGM/gel & flooded
Electricity & energy
Solar Savings & Payback Calculator
Estimate solar production, electricity savings and the break-even payback period.
- Annual production and savings
- Payback and lifetime view
Electricity & energy
EV Home Charging Cost Calculator
Calculate the true cost to charge your electric car at home — per session, monthly, and annual impact on your electricity bill.
- 20 EV battery presets
- Level 1, 2 and 3 charging
Electricity & energy
Heat Pump vs. Gas Heating ROI Calculator
Compare heating cost per million BTUs and payback when switching from gas, propane or oil to an electric heat pump.
- Cost per 1 MMBTU delivered
- Annual savings and payback
Electricity & energy
Induction vs. Gas Cooking Cost Calculator
Compare what it costs to cook on induction against gas, and check the wiring the switch actually needs.
- Cost per 1 MMBTU delivered to the pot
- Breaker, circuit and panel feasibility screen
Metadata & privacy (2)
Remove hidden metadata and check images for privacy risks before sharing.
Metadata & privacy
File Metadata Sanitizer
Remove hidden EXIF, GPS, camera and author metadata from files in your browser.
- Photos, GIFs and PDFs
- No file upload
Metadata & privacy
Screenshot Privacy Checker
Scan screenshot text for sensitive information and redact it before sharing.
- 12 privacy categories
- Risk classification
AI & developer tools (2)
Count tokens in any prompt and price them across LLM APIs, from a single paste to a full monthly forecast.
AI & developer tools
AI Token & LLM API Cost Calculator
Estimate monthly LLM API costs from prompt and output tokens, and find the cheapest 2026 model for your workload.
- 8 models priced per 1M tokens
- Input vs output cost split
AI & developer tools
Paste-to-Token & Prompt Cost Counter
Paste a prompt, document or code to count characters, words and estimated tokens, and price that text as API input on GPT-6 Astra, Claude Opus 5 and Gemini 3.8 Flash.
- Characters, words and tokens
- Input cost for three flagship models