Best Multimeter Under £100
Finding a reliable multimeter under £100 is essential for accurate diagnostics without breaking the bank. We have analyzed specs, owner reviews, and brand reliability to bring you the top models for DIY and professional use.
Quick answer
For most users, the Fluke 101 is the best overall multimeter under £100, offering unmatched accuracy and safety for basic electrical work. If you need more features like capacitance and frequency, the Klein Tools MM400 is a strong alternative with excellent value.
Why trust ToolBuyerHub
- Tested on specs (accuracy, safety ratings, input protection)
- Battery & ecosystem compared
- Aggregated owner reviews from major retailers
- Build quality & warranty checked
- Brand reliability (Fluke, Klein, AstroAI, etc.)
- No fake hands-on claims
Research updated June 2026.
Fluke 101 Multimeter
Compact, accurate, and built for safety.
| Product | Best For | Key Spec | Rating | Price |
|---|---|---|---|---|
| Fluke 101 | Overall Accuracy | 6000 counts, CAT II | 4.7/5 | Under £100 |
| Klein Tools MM400 | Features | Auto-ranging, Temp | 4.6/5 | Under £100 |
| AstroAI TRMS 6000 | Value | True RMS, NCV | 4.5/5 | Under £100 |
| Draper 400A | Clamp Meter | AC/DC Clamp, 400A | 4.3/5 | Under £100 |
| Bosch Universal MM | DIY Simplicity | Auto-ranging, Backlit | 4.4/5 | Under £100 |
Fluke 101 Multimeter
Best OverallPros
- Excellent accuracy for the price
- Compact and lightweight design
- High safety rating (CAT II 600V)
Cons
- No backlight on display
- Limited to basic functions (no capacitance)
The Fluke 101 is a no-nonsense multimeter that prioritizes accuracy and safety. With a 6000-count display and ±0.5% DC voltage accuracy, it is a reliable tool for electricians and hobbyists who need precise readings for basic electrical work.
Owner reviews consistently praise its build quality and ease of use, though some note the lack of a backlight and advanced features like capacitance measurement. It is a focused tool for those who value core performance over extra bells and whistles.
Klein Tools MM400
Best FeaturesPros
- Includes temperature and capacitance
- Auto-ranging for ease of use
- Backlit display for dim conditions
Cons
- Accuracy slightly lower than Fluke
- Bulky compared to basic models
The Klein Tools MM400 is a feature-packed multimeter that goes beyond basics. It offers auto-ranging, a backlit display, and additional functions like temperature and capacitance measurement, making it ideal for automotive and HVAC work.
Users appreciate its versatility and robust build, though some find the 4000-count display less precise than higher-count models. It is a solid choice for those who need more than just voltage and resistance checks.
AstroAI TRMS 6000
Best ValuePros
- True RMS for accurate AC readings
- Non-contact voltage detection (NCV)
- Great value for the feature set
Cons
- Build quality not as robust as Fluke
- Lead quality could be better
The AstroAI TRMS 6000 offers an impressive array of features at a budget-friendly price. It includes True RMS, NCV, and a 6000-count display, making it suitable for both DIY and professional use.
Owner reviews highlight its accuracy and value, though some note that the included test leads are not top-tier. It is a great entry-level option for those who want advanced features without a high cost.
Draper 400A Clamp Meter
Best Clamp MeterPros
- Measures AC/DC current without breaking circuit
- Includes backlight and NCV
- Good for automotive and electrical panels
Cons
- Larger and heavier than standard multimeters
- Accuracy lower for low current readings
The Draper 400A Clamp Meter is perfect for measuring current without disconnecting wires. It handles up to 400A AC/DC and includes features like NCV and a backlight, making it useful for automotive and industrial work.
Reviews note its convenience for high-current applications, but it is less precise for low-current electronics. It is a specialized tool that excels in its niche.
Bosch Universal MM
Best for DIYPros
- Simple and intuitive interface
- Auto-ranging for quick measurements
- Backlit display for low light
Cons
- Lower count display (2000 counts)
- No True RMS or advanced features
The Bosch Universal MM is designed for DIY enthusiasts who need a straightforward, reliable multimeter. It offers auto-ranging and a backlit display, making it easy to use for basic household tasks like checking batteries or outlets.
Owner reviews highlight its simplicity and Bosch brand reliability, but it lacks advanced features like True RMS. It is a solid choice for beginners or occasional use.
What to check before buying a multimeter under £100
Before purchasing, consider the safety rating (CAT II or CAT III) to ensure protection against electrical surges. The display count (e.g., 2000 vs 6000) affects precision, with higher counts offering more detailed readings.
Also, think about the features you need: True RMS for accurate AC measurements, NCV for detecting live wires, and auto-ranging for convenience. A backlight is useful for dim work areas.
Mistakes to avoid
A common mistake is buying a multimeter without checking its safety rating for the tasks you perform. Using a CAT II meter on high-energy circuits can be dangerous.
Another error is overlooking the need for True RMS if you work with non-sinusoidal AC signals, like those from variable frequency drives. Without it, readings may be inaccurate.
FAQs
What is the best multimeter under £100 for beginners?
The Bosch Universal MM is great for beginners due to its simple interface and auto-ranging features.
Is the Fluke 101 worth the price?
Yes, the Fluke 101 offers excellent accuracy and safety, making it a top choice for professionals on a budget.
Do I need True RMS in a multimeter?
True RMS is important for accurate readings on non-sinusoidal AC signals, common in modern electronics.
Can I use a multimeter under £100 for automotive work?
Yes, models like the Klein Tools MM400 with temperature and capacitance are suitable for automotive diagnostics.
What safety rating should I look for?
For most household tasks, CAT II is sufficient, but CAT III is recommended for distribution panels.
How important is the display count?
A higher count (e.g., 6000) allows for more precise readings, especially for low-voltage measurements.
Are clamp meters better than standard multimeters?
Clamp meters are better for measuring current without disconnecting wires, but standard meters are more versatile for voltage and resistance.
What is the warranty on these multimeters?
Fluke and Klein offer limited lifetime warranties, while AstroAI and Draper typically provide 1-3 year warranties.
Can I measure DC current with these meters?
Most models measure DC current, but clamp meters like the Draper 400A are more convenient for high currents.
Which multimeter is best for HVAC work?
The Klein Tools MM400 with temperature and capacitance is ideal for HVAC diagnostics.
Our verdict
For most users, the Fluke 101 is the best overall multimeter under £100, offering unmatched accuracy and safety. If you need more features, the Klein Tools MM400 is a strong alternative, while the AstroAI TRMS 6000 provides excellent value for budget-conscious buyers.