| What it does | Electronics calculators for makers
| Find the month you can stop saving for retirement
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| CA
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| Pricing model | Freemium
| Free
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| Pricing | Free: $0 forever. Pro Monthly: $4 per month, cancel anytime. Pro Lifetime: $29 one-time payment.
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| Key features | - Resistor Color Code: read 4, 5 and 6-band resistors or find bands for a value
- LED Resistor: pick the current-limiting resistor and power rating
- Voltage Divider: output voltage, loading effect, or solve R2 for target Vout
- RC Filter: cutoff frequency, time constant and attenuation at any frequency
- LC Resonance: resonant frequency, characteristic impedance and Q
- 555 Timer: astable frequency/duty cycle and monostable pulse width
- Battery Life: runtime from capacity, active/sleep current and duty cycle
- PCB Trace Width: IPC-2221 trace width for current and temperature rise
- Electronics Unit Converter: SI prefixes, AWG to mm², mil to mm, dBm to mW, oz copper
| - Shows the exact month you can stop saving
- Runs 1,000 simulated markets to show odds of success
- What-if scenarios for savings, returns, and fees
- Accounts for investment fees and contribution raises
- Share links to compare plans with others
- No sign-up required
- Calculations run in browser, data not stored
- Shows formulas and assumptions transparently
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| What makes it different | - Real E-series resistor values, not ideal numbers
- Engineering notation input and result sharing as links
- No ads, no tracking, no sign-up for free calculators
- Whole-device BOM costing and battery-life summary in Pro
- Works on phone at the bench
| - Answers when you can stop saving, not just how much you need
- No sign-up, no data stored, free to use
- Shows odds of success with Monte Carlo simulations
- Plain language explanations without financial jargon or hype
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 16 |
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| Referring domains (Majestic) | 0 | 2 |
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Ohmlark
Coast FIRE Planner