Capacitance Converter Online — Free Capacitance Converter Tool

CodexFuse Team · 2026-10-27T01:54:54.183Z · 10 min read min read

Convert farads, microfarads, nanofarads and picofarads instantly with the free CodexFuse capacitance converter — exact SI factors, no sign-up.

A capacitance converter translates a capacitor's value between units — farads, millifarads, microfarads, nanofarads and picofarads — so the number on a datasheet, a schematic and a supplier listing all mean the same thing. If you have ever stared at "104" printed on a ceramic disc and wondered whether you needed 100 nF or 0.1 µF, you have felt the exact confusion this tool removes. The answer, for the record, is both: they are the same value.

Capacitor units trip people up because electronics uses the full SI scale at once. A power-supply designer writes 470 µF, a ceramic capacitor datasheet prints 104, and a parts supplier lists the same component as 100,000 pF. All three describe one part. Convert wrong by a factor of 1,000 and you order a part that either does nothing or damages the circuit it lands in.

What Is a Capacitance Converter?

A capacitance converter is a free online tool that converts a capacitance value from one unit to another using exact SI factors, where each step down the scale multiplies by 1,000: 1 F = 1,000 mF = 1,000,000 µF = 1,000,000,000 nF = 1,000,000,000,000 pF. You enter a value and a unit, and the tool instantly shows the equivalent in every other unit, removing the mental arithmetic that causes ordering mistakes.

The capacitance converter on CodexFuse supports ten units: farad (F), millifarad (mF), microfarad (µF), nanofarad (nF), picofarad (pF), kilofarad (kF), abfarad (abF), statfarad (statF), EMU and ESU. Most day-to-day work only needs the first five, but the full table is there when a vintage datasheet or a physics reference throws an exotic unit at you.

Why Do Capacitor Units Cause So Many Mistakes?

The core problem is that three different numbering systems collide on the same workbench:

• SI units on schematics: engineers write 2.2 µF, 100 nF or 10 pF depending on the decade, and the symbol changes with the value.
• Three-digit codes on small parts: a ceramic capacitor marked 104 means 10 followed by four zeros in picofarads — 100,000 pF, or 100 nF. The code never says which unit it is in.
• Supplier listings in mixed units: one store lists a part as 0.47 µF, another as 470 nF, and a comparison shopper has to decide whether they are identical.

Each system is logical on its own. Together, they create a factor-of-1,000 trap at every handoff — design to procurement, procurement to repair bench, repair bench to customer invoice. A wrong decade in capacitance is not a rounding error; it changes how a filter behaves, how long a timing circuit holds, and whether a power supply stays stable under load.

Worked Example: Sourcing a 47 µF Replacement Capacitor

Consider a fictional but typical scenario. A repair technician, Sara, opens a dead audio amplifier and finds a bulging electrolytic capacitor on the power rail. The schematic calls for 47 µF at 25 V. Her local supplier's website lists no 47 µF parts in stock — but it does list a 47,000 nF capacitor at the right voltage, and a bulk pack labelled 47000.

Here is how she checks it, step by step:

1. Read the schematic value: 47 µF, 25 V. Voltage rating matters separately — a replacement must meet or exceed 25 V.
2. Convert the supplier listing: she enters 47,000 into the capacitance converter, selects nF as the from-unit, and reads the all-units table: 47,000 nF = 47 µF = 0.047 mF = 47,000,000 pF. It matches.
3. Decode the bulk pack: the pack marked 47000 is a trap — a three-digit code needs exactly three digits, so 47000 is not a code at all; it is likely a part number. She ignores it and orders the 47,000 nF part.
4. Verify before soldering: the delivered part's sleeve reads 47 µF, confirming the match. Total time spent converting: under a minute. Cost of getting it wrong: a second order, another week of downtime, and a customer waiting on a finished repair.

The same routine works in reverse. A hobbyist reading 104 off a ceramic disc enters 100 nF and immediately sees 0.1 µF and 100,000 pF — three listings, one part, zero doubt.

How Do You Convert Microfarads to Nanofarads?

To convert microfarads to nanofarads, multiply by 1,000: 1 µF = 1,000 nF, so 0.1 µF = 100 nF, 2.2 µF = 2,200 nF and 47 µF = 47,000 nF. Each step down the SI scale (F → mF → µF → nF → pF) multiplies by 1,000, and each step up divides by 1,000.

Going the other way is just as mechanical. A 100 pF ceramic cap is 0.1 nF, or 0.0001 µF. The converter handles the zeros for you, and very small results — below 0.000001 — are shown in scientific notation so nothing gets lost in a string of decimal places.

How Does the CodexFuse Capacitance Converter Work?

The tool follows the same three steps every time, verified against the live tool page:

1. Enter the value: type any number, for example 1, 0.1 or 47.
2. Choose the units: pick the from-unit (µF, nF, pF, F and more) and the to-unit from the dropdowns.
3. Read the result: the converted value appears instantly, alongside an all-conversions table showing every unit at once — or copy the result straight into your parts list with one click.

It runs entirely in your browser, with no install and no sign-up for the conversion itself. That matters on a repair bench: you want the answer while the board is open in front of you, not after creating an account.

What This Converter Does Not Do

Honest limits matter, because a unit converter is not a component engineer:

• It does not decode every marking scheme: three-digit codes like 104 are explained in the tool's FAQ, but letter-coded tolerances, voltage codes and manufacturer-specific series markings still need the part's datasheet.
• It does not check voltage, tolerance or dielectric: a 47 µF part at 16 V is not a substitute for a 47 µF part at 50 V, even though the capacitance matches. Check the full specification before ordering.
• It does not measure real capacitors: an aged electrolytic can read far below its printed value. If a circuit misbehaves with a "correct" part, measure the component with an LCR meter instead of trusting the label.
• It does not calculate circuit behaviour: energy stored (E = ½CV²), filter cutoff frequencies and timing constants need circuit math, not unit conversion — though the converted farad value is the input those formulas need.

For those jobs, use the converter as the first step — get a clean farad value — then take that value into the right calculator or datasheet.

When Does a Small Unit Error Become a Business Problem?

For a hobbyist, a wrong capacitor costs a few pounds and a re-order. For a repair shop, a small electronics retailer or a hardware startup, the same error compounds: a wrong batch of parts stalls repairs, a mislabelled product listing earns returns, and a prototype built with the wrong decade of capacitance fails validation. Each incident is small; the pattern is expensive.

The same compounding logic applies to the rest of a small firm's technology. Hosting on one subscription, business email on another, backups nowhere in particular — every separate bill and separate login is another chance for something to slip. CodexFuse replaces that patchwork with one fully managed platform on credits: you top up credits, use exactly what you need across hosting, email, security and backups, and nothing renews silently in the background. If you run a repair business, that means the shop's website, customer email and job records live on the same managed platform you already trust for tools — one bill, one login, no server babysitting.

Start with the concrete step: move one service — typically business email or website hosting — onto CodexFuse, confirm it works the way your team expects, then migrate the rest. The credit model means the trial costs you only what you actually use.

Frequently Asked Questions

How many picofarads are in 1 microfarad?

1 µF = 1,000,000 pF. The chain is 1 µF = 1,000 nF and 1 nF = 1,000 pF, so 1 µF = 1,000 × 1,000 = 1,000,000 pF. Going the other way, 100 pF = 0.1 nF = 0.0001 µF.

What does the capacitor code 104 mean in nanofarads?

104 means 10 × 10⁴ pF = 100,000 pF = 100 nF = 0.1 µF. Three-digit codes give the value in picofarads: the first two digits are significant figures and the third is the number of zeros to add.

How much energy does a capacitor store?

E = ½CV², with C in farads and V in volts giving energy in joules. A 1 µF capacitor charged to 5 V stores 0.5 × 0.000001 × 25 = 0.0000125 J, or 12.5 microjoules. Convert your capacitance to farads first, then apply the formula.

How many microfarads are in 1 farad?

1 F = 1,000,000 µF = 1,000,000,000 nF = 1,000,000,000,000 pF. The farad is a very large unit, which is why real capacitors are almost always labelled in µF, nF or pF instead.

Can I convert millifarads with this tool?

Yes. The converter supports millifarads (mF) alongside the full ten-unit table — 1 mF = 1,000 µF. Millifarads appear most often in supercapacitor and large electrolytic specifications.

Is the capacitance converter really free?

Yes. It runs entirely in your browser with no install and no payment. Like CodexFuse's other free online tools, it is there to solve one job quickly — and if you need managed hosting, email or backups for your business, those run on the same platform on pay-as-you-go credits.

Convert It Once, Order It Right

Capacitor units only cause trouble when you convert them in your head under time pressure. Enter the value, check the all-units table, match the listing — and the factor-of-1,000 trap disappears. Bookmark the capacitance converter for the next time a schematic, a code and a supplier listing disagree.

And if the rest of your business technology feels like that same disagreement — hosting here, email there, backups nowhere — move it to CodexFuse today. One fully managed platform, pay-as-you-go credits, no subscriptions, no server babysitting. Get started now and put your IT on the same reliable footing as your parts shelf.