Fitness Flohmarkt · Guide

Dumbbell weight for beginners: 3, 5 or 8 kg?

The most common bad investment when buying dumbbells isn't the wrong model, but the wrong weight level. Here is how to figure out a sensible dumbbell weight to start with and how to tell if you've chosen the wrong one.

Choose dumbbell type · Plan your dumbbell set · Hex dumbbell details · Find your starting weight · Choose adjustable dumbbells

In short

One starting weight does not suit every person and exercise. Choose a load you can control through the intended movement range. Check each exercise separately. Whether 3, 5 or 8 kg suits you depends on execution with that load, not the number alone.

The central question

What's a good starting weight for dumbbells?

First define the exercise, movement range and planned repetitions. Test a light load and increase only while maintaining control. Reduce the load if position or range breaks down. A weight that suits rows can be too heavy for a shoulder exercise. Determine working weight for each exercise.

The right load can change with technique, daily condition and training. Record weight and execution to make your next choice understandable. Choosing fixed or adjustable dumbbells is a separate purchasing decision.

A Comparison of the Levels

3, 5, or 8 kg: What These Levels Mean in Everyday Life

From 3 to 8 kg, load more than doubles. These numbers are not interchangeable starting weights. Check intermediate settings, handle and dimensions too. The table shows hex-model sizes, not universal exercise assignments. More design details are in the hex dumbbell guide.

LevelDimensions (L x W x H)HandleChoose your weight
3 kg24.5 x 9 x 10.5 cm28 mmCheck for the exercise and execution
4 kg26 x 10.5 x 12 cm28 mmCheck for the exercise and execution
5 kg28.5 x 11 x 13 cm28 mmCheck for the exercise and execution
6 kg29.5 x 11.5 x 13.5 cm34 mmCheck for the exercise and execution
8 kg30 x 13 x 15 cm34 mmCheck for the exercise and execution
10 kg31 x 14 x 16 cm34 mmCheck for the exercise and execution

The jump from 5 to 6 kg therefore means not only an extra kilo, but also a 6 mm increase in grip diameter. If you have small hands, you’ll notice this more clearly when holding the bar than you will the extra weight. If you’re having trouble deciding at this point, that’s a good reason to get both sizes or opt for an adjustable option instead.

Rubberized hex dumbbell with chromed handle
Available individually

Hex Dumbbell | Hexagon Dumbbell

  • 1 to 60 kg
  • 32 steps
  • Cast iron core
  • Rubber sheath
  • Handle: 13 cm
  • Item No. F-13162

Fixed-weight cast-iron weights with a rubber coating. Up to 10 kg, the series comes in fine increments; beyond that, in 2.5 kg increments. The hexagonal shape stays where you set it down and serves as a support during floor exercises. Important when ordering: The price shown is per piece, not per pair.

Ideal for: Anyone who knows exactly what weight they need and wants sturdy dumbbells without any mechanical parts.

Select a weight category

The Most Common Mistake

Why guessing dumbbell weight is not enough

A shop number does not replace testing the specific exercise. Everyday loads such as bags and buckets have different grips and movement paths. Do not use them as universal evidence of the dumbbell weight you should lift. Test the exercise with a controllable load before ordering several fixed pairs.

Different exercises can call for different loads. Compare the weights needed before committing to one pair. A lighter load is not automatically useless, and a higher weight is not automatically a better investment.

Plan ahead

When do you need the next weight level?

Increase load when you meet your programme’s requirements with stable execution and progression is planned. Check the new setting on the specific exercise. Rest length alone does not show whether you need more weight. Plan suitable increments rather than one fixed jump for every exercise.

Moving from 5 to 8 kg adds 60 percent. Check whether that jump suits your exercise. How many pairs to buy and how to add missing weights are covered in the dumbbell-set guide.

After choosing the weight

Which dumbbells cover your weights?

Once your working weights are established, compare fixed pairs, a set or adjustable dumbbells. Types and purchasing criteria are explained in the general dumbbell buying guide; models and weight ladders are in the Buying guide for adjustable dumbbells.

Recommendation by profile

What is worth it for whom

Complete fresh start at home

You have never trained with weights and do not want to commit. Take this adjustable set for CHF 59.- and work your way up to your level in 0.5 kg increments.

Return to work after a break

After a break, reassess the load for each exercise. Previous working weights and a fixed 5 and 8 kg combination are not automatic instructions for returning.

Household with two people who work out

Two people with different strengths need different levels in parallel. The Set from 1 to 10 kg with stand Combine this into one order.

Little space, high ambition

You are planning for more than 10 kg per hand, but you don't have a wall for a rack. The model selection will clarify the Adjustable dumbbell advisor with all weight classes.

Frequently Asked Questions

Dumbbell weight for beginners: the most important answers

How many kg should I start with when training with dumbbells?

There is no universal kilogram figure. Start with a controllable load and check range and execution for each exercise. Choose the next step to suit your programme and check it again.

Are 3 kg dumbbells too light?

It depends on exercise, execution and training goal. 3 kg is neither inherently too light nor automatically suitable. Check whether you can perform the planned work under control rather than judging effectiveness from the number alone.

Are 5 kg dumbbells enough for muscle building?

The number alone cannot determine this. What matters is how the load suits the exercise and your training level. Check execution and programme requirements; there is no fixed time after which 5 kg must become too light.

Is the price for dumbbells per piece or per pair?

Check the product page for whether you selected one dumbbell, a pair or a set, and what is supplied. For an exercise using two dumbbells at once, you need two suitable dumbbells. The displayed amount is clear only together with the sale unit.

Should I buy 8 kg or 10 kg dumbbells?

Test the planned exercise. If 8 kg suits you, that does not automatically mean 10 kg is already appropriate. Check intermediate weights, handle and overall length. Model dimensions are in the hex dumbbell guide.

How often do I need to increase the dumbbell weight?

Follow your training programme and maintain stable execution. Check every higher weight again. A fixed schedule or universal 1 to 2 kg increase does not suit every exercise and starting load.

Ready for the right level?

All weight categories from 1 to 60 kg, adjustable sets, and complete sets are in stock at our location in Liestal, shipped from a Swiss warehouse. If you are unsure, we will advise you personally before you order.

View adjustable dumbbells

About the author

Dominic Bertschin is Head of Marketing at Fitness-Flohmarkt in Liestal. He reads what customers ask and report back after their purchase every day, and writes the guide articles just the way he would have liked to read them himself before placing an order.

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