Free
Start with every core calculator and the circuit simulator basics.
$0
Start free - 10+ electrical calculators
- Interactive circuit simulator
- 5 circuit saves per month
- Knowledge base access
- No ads
Free to start
Electrical calculators are free. Pro saves your work.
Use every core calculator and the circuit simulator for free. Upgrade when you need unlimited saved circuits, history, exports, and the upcoming exam prep library.
Popular
Pro Monthly
For apprentices and electricians who need saved work and exports.
$5.99/mo
- Unlimited calculator history
- Unlimited circuit saves
- Circuit export and sharing
- PDF calculation exports
- Priority access to new tools
Pro Annual
Best value for exam prep seasons and repeated field planning.
$49/yr
- Everything in Pro Monthly
- About $4.08 per month
- Exam question bank when released
- Annual billing discount
- Priority support queue
Lifetime
Permanent Pro access for early supporters.
$99one-time
- Lifetime Pro access
- All future calculator improvements
- All future simulator improvements
- Exam prep access when released
- No recurring subscription
Pro feature gates
What stays free, what Pro unlocks
This matrix now uses the same feature-access rules shown inside calculator and simulator workflows.
Calculator history
Free5 / month
ProUnlimited history
Unlimited circuit saves
Free5 saves / month
ProUnlimited
PDF export
FreeNot included
ProExport reports
Full exam prep
FreePreview only
ProFull library
Why no ads?
The Free plan stays clean so apprentices and DIY users can calculate quickly without distracting ad blocks.
When should I upgrade?
Upgrade when you need saved history, unlimited circuit saves, PDF exports, or the upcoming exam prep library.
Safety note
All electrical results are references for learning and planning. Real installations must follow local code and qualified professional review.