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Calcimator

Electrical Engineering Suite

Complete electrical calculator — Ohm's Law, voltage drop, resistor color codes, series/parallel circuits, and capacitor calculations for engineers and hobbyists.

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How to Use This Calculator
  1. Follow the step-by-step wizard — complete each step before moving to the next. This guided approach ensures you provide all the necessary information in a logical order.
  2. Calculator Mode — Calculation mode to use. Choose from: Ohm's Law Calculator, Voltage Drop Calculator, Resistor Color Code, Series/Parallel Resistors, Capacitor Calculator. default: 0.
  3. Solve For — The variable to solve for. Choose from: Voltage (V), Current (I), Resistance (R), Power (P). default: 0.
  4. Voltage — Electrical potential difference in volts. Accepts values from 0 V to 1,000,000 V (default: 12 V).
  5. Current — Electrical current in amperes. Accepts values from 0 A to 100,000 A (default: 2 A).
  6. Resistance — Electrical resistance in ohms. Accepts values from 0 Ω to 1,000,000 Ω (default: 6 Ω).
  7. Power — Power output or consumption. Accepts values from 0 W to 1,000,000 W (default: 24 W).
  8. Wire Gauge (AWG) — Wire gauge (AWG). Choose from: 14 AWG, 12 AWG, 10 AWG, 8 AWG, 6 AWG, 4 AWG, 2 AWG, 1 AWG, 1/0 AWG. default: 12.
  9. Wire Length (one way) — Total length of the wire. Accepts values from 1 ft to 10,000 ft (default: 100 ft).
  10. Current Load — enter a number in A. Accepts values from 0.1 A to 200 A (default: 15 A).
  11. System Voltage — enter your preferred option from the dropdown. Choose from: 12V DC, 24V DC, 120V AC, 240V AC, 277V AC, 480V AC. default: 120.
  12. Wire Material — enter your preferred option from the dropdown. Choose from: Copper, Aluminum. default: 0.
  13. Resistor Type — enter your preferred option from the dropdown. Choose from: 4-Band, 5-Band. default: 0.
  14. Band 1 (1st Digit) — enter your preferred option from the dropdown. Choose from: Black (0), Brown (1), Red (2), Orange (3), Yellow (4), Green (5), Blue (6), Violet (7), Gray (8), White (9). default: 1.
  15. Band 2 (2nd Digit) — enter your preferred option from the dropdown. Choose from: Black (0), Brown (1), Red (2), Orange (3), Yellow (4), Green (5), Blue (6), Violet (7), Gray (8), White (9). default: 0.
  16. Band 3 (Multiplier) — enter your preferred option from the dropdown. Choose from: Black (×1), Brown (×10), Red (×100), Orange (×1k), Yellow (×10k), Green (×100k), Blue (×1M), Gold (×0.1), Silver (×0.01). default: 2.
  17. Band 4 (Tolerance) — enter your preferred option from the dropdown. Choose from: Brown (±1%), Red (±2%), Green (±0.5%), Blue (±0.25%), Violet (±0.1%), Gray (±0.05%), Gold (±5%), Silver (±10%), None (±20%). default: 6.
  18. Circuit Type — enter your preferred option from the dropdown. Choose from: Series, Parallel. default: 0.
  19. Resistor 1 — enter a number in Ω. Accepts values from 0 Ω to 10,000,000 Ω (default: 100 Ω).
  20. Resistor 2 — enter a number in Ω. Accepts values from 0 Ω to 10,000,000 Ω (default: 200 Ω).
  21. Supply Voltage — enter a number in V. Accepts values from 0.1 V to 10,000 V (default: 12 V).
  22. Capacitance — enter a number in µF. Accepts values from 0.001 µF to 100,000 µF (default: 100 µF).
  23. Frequency — Number of cycles per second. Accepts values from 0.1 Hz to 1,000,000 Hz (default: 60 Hz).
  24. Voltage — enter a number in V. Accepts values from 0.1 V to 10,000 V (default: 12 V).
  25. Expand "Advanced Options" for additional fine-tuning. These optional inputs let you model more specific scenarios:
  26. Resistor 3 (optional) — enter a number in Ω. Accepts values from 0 Ω to 10,000,000 Ω (default: 0 Ω).
  27. Resistor 4 (optional) — enter a number in Ω. Accepts values from 0 Ω to 10,000,000 Ω (default: 0 Ω).
  28. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  29. Voltage — shown as a numeric value. This is the primary result of this calculator.
  30. Resistance Value — your calculated result. This is the primary result of this calculator.
  31. Current — shown as a numeric value.
  32. Resistance — shown as a numeric value.
  33. Power — shown as a numeric value.
  34. Conductance — shown as a numeric value.
  35. Energy (1 hour) — shown as a numeric value.
  36. Voltage Drop — shown as a numeric value.
  37. Voltage Drop % — shown as a numeric value.
  38. Voltage at Load — shown as a numeric value.
  39. Total Resistance — shown as a numeric value.
  40. Power Loss — shown as a numeric value.
  41. NEC Compliance — your calculated result.
  42. Recommended Gauge — shown as a numeric value.
  43. Tolerance — shown as a numeric value.
  44. Min Resistance — shown as a numeric value.
  45. Max Resistance — shown as a numeric value.
  46. Band 1 — your calculated result.
  47. Band 2 — your calculated result.
  48. Multiplier Band — your calculated result.
  49. Tolerance Band — your calculated result.
  50. Circuit Type — your calculated result.
  51. Total Current — shown as a numeric value.
  52. Total Power — shown as a numeric value.
  53. Capacitive Reactance — shown as a numeric value.
  54. AC Current — shown as a numeric value.
  55. Energy Stored — shown as a numeric value.
  56. Charge — shown as a numeric value.
  57. Scroll down to explore 4 charts (Electrical Values, Voltage Profile, Tolerance Range, Resistor Values) for a visual breakdown of the data.
  58. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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